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What is the solution of the pair of linear equations 37x+43y=123, 43x+37y=117?(a) x = 2,y = 1(b) x = -1,y = 2(c) x = -2,y = 1(d) x = 1,y = 2 |
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Answer» Correct answer is: (d) x = 1,y = 2 37x+43y=123 ........(1) 43x+37y=117 ........(2) Adding (1) and (2) X+ y=3 ........(3) Subtracting (2) from (1) -x + y=1......(4) Adding (3) and (4), 2y=4 y=2 ⇒ x=1 ∴ solution is x=1 and y=2 |
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